Exothermic instrument for firing explosive
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 10, 2000
Grant Date -
N/A
app pub date -
Mar 10, 1998
filing date -
Mar 11, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The exothermic instrument for firing an explosive comprises a circuit board 1 having a heat resist layer 6 on a substrate 11 and an exothermic resistance 4, which connects to a pair of through hole conductive electrodes 13 passing through the substrate 11, contacting with the explosive 19 on the heat resist layer 6, a pair of electrode pins 8, each one thereof is inserted into each one of the through hole conductive electrodes, and an insulator for holding the circuit board 1 through which the electrode pins 8 pass.
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